Grinding-tvlachine



{No Model.) P. J. WESTPHAL.

GRINDING MACHINE.

No. 551,243. Patent ed Dec. 10, 1895;

E z f an ANDREW I.GRAHAM.PNUTD-UI'HD.WASHIN5TDI.EC.

Unites STATES ATENT @rricn,

lE'lER J. XV ISTPIIAL, OF HOLYOKE, MASSACUUSE TS.

GRlNDING-MACHlNE.

SPECIFICATION forming part of Letters Patent No. 551,243, dated December 10, 1895. Application filed April 30, 1895. Serial No. 547,689 (No model!) Machines, of which the following is a speciii cation.

This invention relates to improvements in grinding machines of a special class-namely, those designed for grinding slitter-cutters for paper, which description of cutters are common and extensively used.

The object of this invention is to devise a machine for grinding and truing slitter cutters or disks which will be capable of grinding the faces of the disks, either perpendicular to their axes or at any obliquity thereto,

and which shall be practical, durable, susceptible of convenient and rapid adjustment and operation and altogether convenient and satisfactory in and for the performance of the work which is intended to be performed on and by the machine.

The invention consists in the combination and arrangement of parts and constructions thereof, all substantially as will hereinafter fully appear, and be set forth in the claims, reference being had to the accompanying drawings, in which- Figure 1 is aside elevation of the machine, showing a disk or paper-slitting cutter mounted thereon ready to be ground and trued at its cutting-edge. Fig. 2 is an elevation substantially the same as Fig. 1, but showinthe spindle or holder for the slitter-disk and the direct-ly united driving connection therefor in somewhat changed positions. Fig. 3 is a vertical longitudinal sectional view of parts taken on the line 3 3, Fig. 1. Fig. i isahorizontal cross-section and partial plan view taken on line at 4, Fig. 1.

The machine will be now described sufficiently in detail in conjunction with the aforementioned drawings, which form a part of this specification.

The machine is constructed with a suitablymounted bed A, supported by the standard A at a suitable height above the floor, there being upon the bed the transverse right-angularly-arranged slides 13 and O, the latter having thereon the head I) for carrying the grinding-wheel shaft a, on which the grinding-whee1 G is secured, and suitable driving means is provided for the grinding-wheel, and the head on which the grinding-wheel'is mounted is vertically adjustable by the feedscrew I). These parts thus far described in themselves constitute no patent-able novelty and are not so claimed; but'there is combined with the grinding-wheel, which is suitably mounted, (the aforementioned supports therefor being entirely suitable as the mount therefor,) the spindle or shaft II for receiving and carrying the slitter-disk a which spindle has its bearing and support in and through an axially bored, drilled, or otherwise apertured holder or sleeve J, which is externally pivot ally supported whereby it may have abodily swinging or tilting motion in a suitable ex tent on an axis which is at right angles to the lengths of the spindle H and 0f the sleevesupport J, in and through which it is journaled. This sleeve-shaped. journal-bearing for the, rotatable spindle for the slitter-disk, which is to be ground as specifically shown, is pivotally supported by having the laterallyprojecting trunnions d d, which are hung in sockets f therefor of the horizontally and forwardly-extending bracket g, which is bolted upon the bed of the machine.

' K represents a driving-shaft for the slittercarrying spindle, the same being mounted to rotate vertically in fixedbearings 71 hand hav ing a pulley 7L2 thereon, whereby through a suitably applied and drix en belt it maybe speeded. The spindle H and the drivingshaft K therefor are connected. so that the said shaft will cause the rotation of the spindle andyct not interfere with the oscillatory movements of the said shaft in its journalsleeve; and to this end the connection is constituted by an intermediate two-part telescopic spline-engaged shaft M, having at its ends, as seen at i and j, universal joint connections with the said shaft and spindle H K. A flexible shaft in this interposition and connection would be an equivalent means to the required end.

In the utilization of the present machine, the slitter-disk is mounted on the upper end of the spindle and secured thereupon by the headed bolt m. The head 1) is lowered or adjusted to bring the grinding-wheel G, car- IOO ried thereby, to proximity to the work and the spindle is inclined by swinging the sleeve on its trunnion-like bearirig-supports to corre spond to the bevel which is to be imparted to the face of the diskadjaeent its periphery.

Th: sleeve may be confined or clamped in the given inclination, or in some cases, where a grimling-wlneel of proper peripheral contour is provided,in a truly axially vertical position, by constricting the sockets for the trunnions oi the sleeve J, which is possible by reason of the split or separable construction of the socketed members of the jvokeformed bracket and the provision of the bolts n with set-nuts, As the grinding operation proceeds, the grinding-wneel may have a suit.- able downt'eed by the lowering of the head ll) through means of the fetal-screw I).

Having thus described my invention, what I clainuand desire to secure by Letters Pat Out, is

1. In a machine for grinding slitter-disks, the combination with a grinding wheel and rotary supporting means therefor, of a spindle on which to mount the dish, a sleeve-like jou rnal,within and through which the spin die extends and rotates,whieh is pivotally supported whereby it may oscillate relative to the plane of rotation of the grindin wheel, and means for rotating said spindle which has a continuous connection therewith, the position of which, however, maybe made variable according to the adjustment of the spindlesupporting sleeve, substantially as described.

2. In a machine for grinding slitter-disks, the combination with a grinding wheel and shaft therefor, and means for imparting to the grinding wheel a bodilyi'ood movement, of a spindle on which to mount the dish, a sleeve sis-1,12%

like journal,.vithin and through which the spindle ext-ends and rotates,-which is pivotall supported whereby it ma oscillate relative to the plane of rotation of the grinding wheel, and means for rotating said spindle which has a continuous connection therewith. the position of which, however, is variable according to the adjustment of the spindlesupporting sleeve, substantiallyas described.

3. In a machine for grinding slitter-disks. the combination with grinding wheel and sn 1 porting and rotating means therefor, ofa spin die on which to mount the dish, a journal sleeve within and through which the spindle rotates, a bracket under the grinding \Vllttl by which the journal-sleeve is external ty of ti re latter pivotally supported, a driving-shaft for the spindle and an interposed medium or connection, which at its ends has universal joint connections with the said spindle and its driving-shait, substantially as described.

at. In a machine for grinding slitter-disks. the combination with grinding wheel and supporting and rotating means therefor, of a spi ndle on which to mount the disk, a journal sleeve within and through which the spindle rotates, a bracket under the grinding wheel by which the journal-sleeve is externally of the latter pivotally supported, means for corn fining the sleeve in any of its variously inclined adjustments, a driving shaft for the spindle and an interposed medium of 60111164- tion, which at its ends has universal joint connections with the said spindle and its drivingshaft, substantially described.

PETER J. *EFTPHAL. Witnesses:

WM. S. BELLows, K. I. CLEMONS. 

